Problem 4 Water is flowing in a pipe with varying cross-sectional area. At the point A, where the cross
sectional area of the pipe is 0.0700 m2
, the velocity of the water is 3.50 m/s. Compute:
a) The speed of the water at point B, where the cross-sectional area of the pipe is 0.105
m2
;
b) The speed of the water at point C, where the cross-sectional area of the pipe is 0.0470
m2
;
c) The rate at which water flows in the pipe (in m3/s);
d) If point B is 10.0 m below point C, what is the difference in pressure between point B
and point C?

Asilver dollar is dropped from the top of a building that is 1324 feet tall. use the position function below for free-falling objects. s(t) = −16t2 + v0t + s0 (a) determine the position and velocity functions for the coin. s(t) = v(t) = (b) determine the average velocity on the interval [1, 2]. ft/s (c) find the instantaneous velocities when t = 1 second and t = 2 seconds. v(1) = ft/s v(2) = ft/s (d) find the time required for the coin to reach the ground level. (round your answer to three decimal places.) t = s (e) find the velocity of the coin at impact. (round your answer to three decimal places.) ft/s